4 Which statement best describes the graph shown? Original reaction
Reaction B
Energy -
products
reactants
Reaction progress -
FIG. 2.5.1
a. More energy is released by the original reaction.
b. Less energy is needed to start reaction B.
c. The original reaction is catalyzed.
d. Reaction B occurs at a slower rate.

Graph attached

b. Less energy is needed to start reaction B.

Explanation:

The graph shows two different reactions and the energy required over time

a. More energy is released by the original reaction.  - this is false, more energy is required for the original reaction to proceed

b. Less energy is needed to start reaction B.  - this is true, the peak of the curve is lower showing less energy is required

c. The original reaction is catalyzed.  - this is false, likely reaction B is catalyzed

d. Reaction B occurs at a slower rate.- false, they occur at the same rate.

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